Who should teach photography?

The art of teaching photography is not the same thing as the art of photography.

Good teachers ought to understand the capabilities of their students, ought to be able to speak clearly in a way that is understandable, ought to be able to answer questions satisfactorily, ought to be accurate and reliable, ought to be able to encourage and spur the students, ought to have an understanding of the subject and knowing what is important and what is not, and ought to be able to judge progress, adapting the source material as needed. They ought to be able to teach in a way that appears to be effortless, they ought to enjoy teaching, and their students ought to enjoy being taught by them, with the result of them learning and retaining a lot, as well as becoming much better photographers themselves.

While it would be desirable to have a good photographer teaching, perhaps it might be better if the person is first and foremost a good teacher, with a good syllabus, and who has the ability to judge good photography.